D-BUS is a message bus, used for sending messages between applications.
Conceptually, it fits somewhere in between raw sockets and CORBA in terms
of complexity.

D-BUS supports broadcast messages, asynchronous messages (thus decreasing
latency), authentication, and more. It is designed to be low-overhead;
messages are sent using a binary protocol, not using XML. D-BUS also
supports a method call mapping for its messages, but it is not required;
this makes using the system quite simple.

This package provides the D-BUS core library and daemon, as well as
some utilities that complement it.

A launchd agent configuration file has been installed at:
${PREFIX}/Library/LaunchAgents/org.freedesktop.dbus-session.plist

You need to manually load it to auto-start a session bus. Without
loading it, no applications can start a bus nor find an existing one:
% sudo launchctl load \
${PREFIX}/Library/LaunchAgents/org.freedesktop.dbus-session.plist

Or alternatively, you can copy it under the system default path to
automatically load it on system boot:
% sudo cp \
${PREFIX}/Library/LaunchAgents/org.freedesktop.dbus-session.plist \
/Library/LaunchAgents/
% sudo launchctl load \
/Library/LaunchAgents/org.freedesktop.dbus-session.plist

Log message:
dbus: update to 1.12.2.
dbus 1.12.2 (2017-11-13)
========================
The “spider pumpkin” release.
Enhancements:
• Log a warning if a new connection cannot be accepted due to an
out-of-memory condition or failure to identify its AppArmor or
SELinux context (fd.o #103592, Simon McVittie)
Fixes:
• Make use of $(MKDIR_P) compatible with install-sh, fixing build when a
GNU-compatible `mkdir -p` is not available (fd.o #103521, ilovezfs)
• When building for Windows with Autotools, avoid `echo -e`, fixing
cross-compilation on non-GNU platforms like macOS
(fd.o #103493, Tony Theodore)
• Fix crashes in the server side of the nonce-tcp: transport under
various error conditions. This transport should normally only be used
on Windows, where AF_UNIX sockets are unavailable; the unix: transport
is the only one recommended for production use on Unix platforms.
(fd.o #103597, Simon McVittie)
Internal changes:
• Improve test coverage on Travis-CI (Simon McVittie)
dbus 1.12.0 (2017-10-30)
========================
The “gingerbread skull” release.
1.12.x is a new stable branch, recommended for use in OS
distributions.
Summary of major changes between 1.10.x and 1.12.0
--------------------------------------------------
Dependencies:
• Expat >= 2.1.0 is required.
• GLib >= 2.40 is required if full test coverage is enabled.
• [Linux] libselinux >= 2.0.86 is required if SELinux support is
enabled.
• [Unix] dbus now requires an <inttypes.h> that defines C99 constants
such as PRId64 and PRIu64, except when building for Windows.
• [Autotools] Building from git (but not from tarballs) with Autotools
now requires macros from the GNU Autoconf Archive.
• [CMake] Builds done using CMake now require CMake 3.0.2.
Build-time configuration changes:
• Expat is now found using pkg-config. See the release notes for
1.11.14.
• The --disable-compiler-optimisations and --enable-compiler-coverage
options no longer exist. See the release notes for 1.11.4 and 1.11.8.
• [Unix] The --enable-abstract-sockets and --disable-abstract-sockets
options no longer exist. See the release notes for 1.11.20.
• [Unix] Flag files in /var/run/console/${username} are no longer
checked for at_console by default. See the release notes for 1.11.18.
• [Unix, Cygwin] Init scripts are no longer provided by upstream dbus,
and packagers will now need to add these downstream (most already do).
See the release notes for 1.11.18.
• [Unix] The process ID file no longer has a different default location
on Red Hat derivatives. See the release notes for 1.11.18.
• [Unix] ${runstatedir} is now independent of ${localstatedir} with
recent Autotools versions. See the release notes for 1.11.16.
• [Windows] The WINDRES variable is no longer used. See the release
notes for 1.11.22.
Deprecations:
• Eavesdropping is officially deprecated in favour of BecomeMonitor.
See the release notes for spec version 0.31 (in dbus 1.11.14).
• [Unix] Flag files in /var/run/console/${username} are deprecated.
See the release notes for 1.11.18.
New APIs:
• <allow> and <deny> rules in dbus-daemon configuration can now
include send_broadcast="true", send_broadcast="false",
max_unix_fds="N", min_unix_fds="N" (for some integer N).
See the release notes for 1.11.18.
• dbus_try_get_local_machine_id() is like
dbus_get_local_machine_id(), but returns a DBusError.
• New APIs around DBusMessageIter to simplify cleanup.
See the release notes for 1.11.16.
• The message bus daemon now implements the standard Introspectable,
Peer and Properties interfaces. See the release notes for
dbus 1.11.14 and spec version 0.31.
• DTDs for introspection XML and bus configuration are installed.
• dbus can be compiled to be relocatable, making it more suitable for
binary bundling with other software. On Windows, this is on by
default.
• [Unix] A new unix:dir=… address family resembles unix:tmpdir=… but
never uses Linux abstract sockets, which is advantageous for
containers. On non-Linux it is equivalent to unix:tmpdir=….
See the release notes for dbus 1.11.14 and spec version 0.31.
• [Unix] New option "dbus-launch --exit-with-x11".
• [Unix] Session managers can create transient .service files in
$XDG_RUNTIME_DIR/dbus-1/services. See the release notes for 1.11.12.
• [Unix] A sysusers.d snippet can create the messagebus user on-demand.
Miscellaneous behaviour changes:
• [Unix] The session bus now logs to syslog if it was started by
dbus-launch.
• [Unix] Internal warnings are logged to syslog if configured.
• [Unix] Exceeding an anti-DoS limit is logged to syslog if configured,
or to stderr.

Log message:
Updated dbus to 1.10.22.
D-Bus 1.10.22 (2017-07-27)
==
The âroof terraceâ release.
Fixes:
â¢ dbus_message_iter_append_basic() no longer leaks memory if it fails to
append a file descriptor to a message. (fd.o #101568, Simon McVittie)
â¢ dbus_message_iter_open_container() no longer leaks memory if it runs out
of memory. (fd.o #101568, Simon McVittie)
â¢ dbus_message_append_args_valist() no longer leaks memory if given an
unsupported type. This situation is still considered to be a programming
error which needs to be corrected by the user of libdbus.
(fd.o #101568, Simon McVittie)
â¢ Wrap test-pending-call-disconnected with dbus-run-session so that it can
pass in environments that are not already running a D-Bus session bus,
fixing a build-time test regression in 1.10.20
(fd.o #101698, Simon McVittie)
â¢ Ensure that tests fail if they would otherwise have tried to connect to
the real session bus (fd.o #101698, Simon McVittie)
â¢ Make build-time tests cope with finding Python 3, but not Python 2
(fd.o #101716, Simon McVittie)